jetting help please
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jetting help please

  1. #1
    Senior Member californiadreamin's Avatar
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    Feb 2010
    Location
    Temecula CA
    Posts
    145

    Default jetting help please

    heres the motor:
    455 Olds .030 over
    80cc factory iron heads
    9.8:1 comp
    12* initial and 30* total timing
    284 int 288 exh duration .560 lift solid roller

    heres the carb:
    holley 3310-1 780 cfm vacuum secondary
    83s in primary and 84s in secondary

    running pump gas and i have no coloring on the plugs. it a fresh motor with hyperutectics im very leary about running this thing dont want to melt these pistons down. any thoughts?

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  3. #2
    Senior Member jetboatperformance's Avatar
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    Dec 2007
    Location
    Atascadero Calif
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    7,463

    Default

    Learned some hard lessons with Hypers (not sure which you have) nearly 10 to 1 you'll probably be OK with 91 you could actualy get away with 34* Tom

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